1. Many frequencies are linked to a certain airspace.
-> Could it be based on declutter settings? If I'm not showing anything above FL75 anyway because I'm bumbling about at 2000ft watching houses or whatever, I don't need to see the frequencies linked to those airspaces either.
2. Extreme example: you fly north of LFPG, in the TMA there are 9 "De Gaulle Approach" frequencies.
-> show only one line that becomes like a button, then if press that button it expends to show all frequencies, I can select one (typically when I get a handover) and then the button collapses again and shows only that one frequency I have selected?